<header id="header">
    <a href="/"><img src="/image/logo_w_props.png" /></a>
    <nav id="nav">
        {% capture tmp %}{% include menu.html a_toplevel_opener_class="submenu fa-angle-down" a_external_link_class="fa-external-link" %}{% endcapture %}
        {% include render_without_empty_lines.html content=tmp %}
    </nav>
</header>
